Objective To observe the change of learning and memory and the expression change of GABAR1 and N-methyl-D-aspartate receptor 2B (NMDAR2B)in right frontal lobe of the brain of the aged rats after the inhalation of sevoflurane.Methods Fifty male SD rats were randomly divided into control group (group C,n=10)and experimental group (group T,n=40).The control group received air at room tempreture.Experimental groups were divided into two groups:group T1 (2 h)and group T2 (4 h)according to the time of inhalation of sevoflurane at 3% concentration.Ev-ery group was equally divided into two groups and Morris water maze was performed on day 1 and day 7 after sevoflurane inhalation.Then the right frontal lobe was gathered and the mRNA transcription and protein expression of GABAR1 and NMDAR2B were detected by Quantitative Real-time PCR and immunofluorescence technique.Results Compared with group C,the escape latency was prolonged in groups T1 and T2 after 1 day of inhalation of sevoflurane (P<0.05),and the times of space explora-tion reduced (P<0.05).mRNA transcriptional and protein content of GABAR1 were significantly upregulated in frontal lobes of groups T1 and T2,mRNA transcriptional and protein content of NMDAR2B were significantly down-regulated (P<0.05).After inhalation of sevoflurane for 7 days, the protein expression of NMDAR2B in the frontal lobe of group T1 was lower than that of group C (P<0.05).In group T2,the escape latency was prolonged (P<0.05),the number of space explo-ration traversals was decreased (P<0.05),the expression of GABAR1 protein in frontal lobe was up-regulated (P<0.05),and the expression of NMDAR2B protein was down-regulated (P<0.05), and the amplitude was higher than that in group T1 (P<0.05).Conclusion Continuous inhalation of sevoflurane can reduce the spatial memory ability of aged rats,and the effect of prolonged inhalation is greater and longer.This effect is related to the expression of neurotransmitter receptors such as GABAR1 and NMDAR2B in the frontal lobe.

Objective To evaluate the efficacy and safety of the mobilization and collection of unrelated allogeneic peripheral blood stem cells. Methods The suitable stem cell mobilization plan was made in accordance with the hematopoietic stem cell mobilization plan of China Marrow Donor Program, the ruler of the hospital, and the donor's constitution. The unrelated allogeneic peripheral blood stem cells of 64 healthy donors were collected in the second Hospital of Shanxi Medical University from May 2012 to January 2017. The donor was infected one or several times with the mobilization agent granulocyte colony stimulating factor (G-CSF) by 5-10 μg·kg-1·d-1. After 3-4 days, peripheral blood hematopoietic stem cells were collected using COBE Spectra blood cell separator. Then, the effect and adverse reaction of donors were analyzed from different age and sex. Results It can achieve the acquisition requirements using 3 or 4 days of mobilization programs, mononuclear cells≥5.0×108/kg, CD34+cells≥2.0×106/kg. The single acquisition success rate (the target acquisition of the number of mononuclear cells and CD34+) up to 65 ％, collection efficiency reached 52％, which could reduce the risk of donor and the cost of patients. The quality of donor stem cell of young was better than that of older persons. Sixteen donors (25％) had mild adverse reactions, and no special treatment was required. Conclusions Allogeneic stem cell mobilization is safe. Starting from save medical resources and the interests of the donor the 3 day or 4 days of mobilization scheme could improve the success rate of the single mobilization. During the collection process, the condition of donor hypocalcemia should be observed and health education should be given to relieve the tension of donor.